diff --git a/drivers/marvell/comphy/phy-comphy-cp110.h b/drivers/marvell/comphy/phy-comphy-cp110.h
index ada6aec..2461e5c 100644
--- a/drivers/marvell/comphy/phy-comphy-cp110.h
+++ b/drivers/marvell/comphy/phy-comphy-cp110.h
@@ -8,11 +8,11 @@
 /* Marvell CP110 SoC COMPHY unit driver */
 
 int mvebu_cp110_comphy_is_pll_locked(uint64_t comphy_base,
-				     uint64_t comphy_index);
+				     uint8_t comphy_index);
 int mvebu_cp110_comphy_power_off(uint64_t comphy_base,
-				 uint64_t comphy_index);
+				 uint8_t comphy_index);
 int mvebu_cp110_comphy_power_on(uint64_t comphy_base,
-				uint64_t comphy_index, uint64_t comphy_mode);
+				uint8_t comphy_index, uint64_t comphy_mode);
 int mvebu_cp110_comphy_xfi_rx_training(uint64_t comphy_base,
 				       uint8_t comphy_index);
 int mvebu_cp110_comphy_digital_reset(uint64_t comphy_base, uint8_t comphy_index,